Boiler.



(No Model.)

` WnTNcESE,

BOILER.

` Fatentedoct. 3, |899. w. R. AumcKs a J. H. WILLIAMSON.

(Ap'pcation ed Nov. 27, 1897.vv

nl: man; ma no. no1-sum `Pfffi- 2 Sheets-Sheet No. 634,I27. Y A Patented Oct. 3, i899. W. B. ADDICKS & J. H. WILLIAMSON.

BOILER.

Y (Application led. Nov. 27, 1897.) (Niro llude.) K 2 Sheets-Sheet 2.

ATTY.

111: Hemus mans cu. Hin-dumm. wnsmusram D. c.

UNITED 'STATES .PATENT OFFICE,

WALTER R. ADDICKS, OF BROOKLINE,' MASSACHUSETTS, AND JOHN H. WILLIAMSON, OF BETHEL, CONNECTICUT; SAID WILLIAMSON AS- SIGNOR TO SAID ADDICKS.

BOILER.

SPECIFICATION forming part of Letters Patent No. 634,127, dated October 3, 1899. lApplication led November 27, 189'?. Serial No. 659,983. *(No model.)

To all whom, it may convoerasr.'

Be it known that We, WALTER R. ADDIoks,

residing in Brookline, in the county of Nor-V folk and State of Massachusetts, andJoHN H. WILLIAMSON, residing in Bethel, yin thecounty of Fairfield and State of Connecticut,

have invented an Improvement in Boilers, ofV

to utilize the heated gases referred to by pass-Y ing them through a boiler; but, so far as we are aware, these attempts have not been commercially successful, owing to the fact that the heating-surfaces of the boiler soon become coated over with a deposit of foreign matter held in suspension or in combination- With the gases and which solidies or bakes rapidly onto said heating-surfaces and forms a non-heat-conducting coating for the boiler, which diminishes the efficiency of the boiler and soon renders the same practically useless. This is especially true when the boiler is of tubular construction, in which the hot gases pass through the tubes, for, by reason of the deposit referred to, these tubes become Wholly or partially closed in a substantially short time.

Prior to this invention We are not aware of a boiler which is so constructed as to permit of its use commercially in conjunction with aWater-gas-producing apparatus, owing to the fact that vno provision has been made Wherebythel boiler proper could be removed without disturbing its casing or shell, or vice versa, to permit ofl access to the coated surfaces of the boiler for the purpose of removing the deposit or coating on said surfaces.

Our invention has for its object to provide a boiler which is capable of being removed from its casing or shell, or vice versa, and replaced vby a clean or Vnevvfboiler yor casing with substantially little inconvenience, ex-

f pense, or delay. Thes'eand other features of ythis invention will be pointed out in the claims atthe end of this specification.

YFigure 1 is a vertical section of a boiler embodying lthis invention, and Fig. 2 a top or plan View of the boiler shown in Fig. l.

In 'the present instance We have chosen to illustrate our invention in its preferred formnamely, with' the casing stationary and the boiler proper removable therefrom Without disturbing the side Walls' of the casing.

- Referring to Fig. l, A represents the side Walls of f the outside shell or casing, which may be of any desired or suitable construction, and preferably an iron or steel jacket a, provided with a lining d', of fire-brick or other suitable refractory material. The casing or shell is provided with a bottom A' and Va top A2, both of a construction similar t6 the side Walls and one or both of which is removably attached to the said sidewalls.

The casing or shell referred to contains Within it the boiler proper, preferably of the Aform and construction herein shown and consisting of a :preferably cylindrical body a4, preferably longer than the casing or shell and extended, as herein shown, through and beyond the top A2 and bottom A of said casing. The body of* is provided, as herein shown, with removable ends or heads a a7, the head a7 having, as shown, a manhole as, which in practice will be closed bya suitable cover. (Not shown.) Y

The body a4 of the boiler herein shown is provided With a plurality of projecting hollow tubes or pipes b, closed at their outer ends and preferably arranged about the body a* to obtain a staggered and spiral effect. The body a4 and its attached tubes or pipes b are of such size as will 'permit' of their being removed from Within the casing or shell Without disturbing the side Walls A of the same.

'The removal of the boiler proper may be effected by removing either the top A2 or the bottom Ai of the outside casing, depending upon the location of the boiler Within the gasworks. In the presentinstance both the top A2 and bottom A are shown as detachablyf Ass secured to the side Walls A of the casing, the.

IOO

shown as secured to the metal jacket (L by bolts 192, while the bottom A is shown as supported upon an angle-iron ring 192, riveted or bolted to a like ring 194, attached to the metal jacket a.

ln order to permit of expansion and contraction of the boiler proper and secure a gastight joint at the point or points Where the boiler extends through the top A2 or bottom A', a suitable packing is provided.

In the present instance the boiler extends through both the top A2 and bottom A of the casing, and a packing-ring 1910 is provided for the top A2 and a packing-ring 1912 is provided for the bottom A.

The packing-rings 19101912 may be secured in position in any suitable or desired manner, and, as herein shown, the packing 1910 is secured by means of a anged ring 1912, attached to the top of the casing, and a second flanged ring 1914, attached to the ring 1912, as by bolts 1915. The packing 1912 may be secured in a like manner by flanged rings 191G 1917 and bolts 1918. The boiler is provided, as shown, with a steam-dome 192, formed by the upper end of theV body a4, and a cross partition-Wall 1921, having an outlet-pipe 1922 from the steam and Water chamber 1522 into the steam-dome 1920, and to Which outlet-pipe is secured'by bolts 1924 a cap 1925, into which the coupling-pipe 1926 is screwed, the pipe 1926 being extended through the top a6 of the boiler and connected by a coupling or fitting 1920 to the main steamoutlet pipes 1931. The pipe 1921, as shown, is screwed through the crownsheet or top a and a reinforcing-plate 1932.

The outside casing or setting for the boiler proper is supported on a suitable foundation, and in the present instance the said casing is shown as resting upon I-beams 1922, which in turn rest upon a suitable foundation, which may be a circular beam 1934, which la'tter may be supposed to form part of the floor of the room in Which the boiler is placed. This floor may be the basement of the gasworks or it may be above the basement, which latteris preferred, and when so located the iioor may have a suitable opening through which the boiler proper may be lowered down into the basement after making the necessary disconnections of the pipes and removing the bottom A of the outside casing or shell.

For the purpose just specified the top A2, of the boiler may have attached to it suitable plates or pieces 194o (see Fig. 2) for the attachment of suitable tackle. lVhen the boiler is lowered into the basement or to the iioor beloW,itis accessible for cleaning either by hand or machinery, and when properly cleaned it may be again hoisted into itscasing; but, if desired, a second and clean boiler can be hoistedinto place Within the casing in a comparatively short time, and when properly positioned the pipe connections may be made and the bottom A2 replaced and secured gastig 1t.

The outside casing for the boiler proper is provided, as' shown, with a gas-inlet 1941 in its side wall A, near its bottom A, and With a gasoutlet 1942 in its top A2 and is further provided in its side Walls A with manholes 1913, which are closed gas-tight by suitable covers 1944.

The top A2 ot the boiler-casing may have extended across it suitable-bars 1950 to resist the pressure of the gas vWithin the said casing and which are removably attached to said casing.

In the present instance the bottom of the boiler proper, CL4, is supposed to be anchoredthat is, it is supposed to rest on a solid support, which may be cross-bars resting on the beam or bar 19M-While the top of the boiler is free to respond to the variations in temperature, suitable provision being made in practice in any usual Way for the steam-pipes to move with the boiler.

In order tov avoid dead-pockets within the casing for the accumulation of air and gas, which might form an explosive mixture, the

corners of the casing are made rounding, as

shown in Fig. l.

From the above description it Will be seen that the boiler proper may readily be removed from its casing in a comparatively short time Without destroying or partially destroying said casing, and, further, that it may be rea moved from either end. We have herein shown the boiler proper extended through both the top and bottom; but we do not deL sire to limit ourselves in this respect, as it may be extended only through one end. The end of the boiler which is free to respond to variations in temperature is provided with a suitable gas-tight packing to prevent the es cape of gas out ot' said casing, the gas being under pressure in said casing, which is thus rendered pressure-ti-ght.

We claim l. Ina boiler of the character described, the combination with an outside pressure-tight ncasing provided with a gas-inlet and a gasoutlet, and having one of its ends removable, of the boiler proper located Within said casing and having one end extended through one end of said casi-ng, substantially as and for the purpose specied.

2. In a boiler of the character described, the combination with an outside pressure-tight casing provided with a gas-inlet and With a gas-outlet, and a boiler located Within said casing and anchored at one end and having its other end free to respond to variations in temperature, substantially as described.

3. In a boiler of the character described, the combination With an outside pressure-tight casing provided with a gas-inlet and with a gas-outlet, and a boiler located Within said casing and having one end anchored and its other end extended loosely through said casing, and a gas-tight packing for the loose end of said boiler, substantially as described.

4. In aboiler of the character described, the combination with an outside pressure-tight IZO casing provided with a gas-net and with a', names to this speeication in the presence of gas-outlet, and aboler located Within said ea-stwo subscribing witnesses.

ing and anchored at one end and having its other end free to respond to variations in tem- 5 peature, and means to render thecasing gastight at the unanohored end of the boiler, sub- X/Vtuesses:

stantialiy as described. JAS. H, CHURCHILL,

J. MURPHY.

In testimony whereof We have signed oui` 

